Hey stealthchaser, these 2 plants, Queen Anne's Lace (AKA Wild Carrot, Daucus carota) and Cow Parsnip (AKA all kinds of names

and Heracleum lanatum [also, it seems in some books is called H. maximum

]) are very dissimilar, both in leaf structure and in size.
According to National Audubon:
Leaf: Queen Anne's Lace - 2"-8", very finely cut, fern like
- best picture I could find in a hurry.
(compare this to pitdog's picture)
Leaf: Cow Parsnip - in 3 segments (compound),
each 3"-6" wide, lobed and toothed
Flowers (umbels) - Queen Anne's Lace - 3"-5" wide
Flowers (umbels) - Cow Parsnip - clusters - 4"-8" wide
Height - Queen Anne's Lace - 1' - 3'
Height - Cow Parsnip - 4'- 9'
Now in looking at the above specs, it would seem that the smaller range of Cow Parsnip and the larger range of Queen Anne's Lace could possibly make for confusion of these two plants. In practice, however, they are quite different and would make confusing the two virtually impossible to all but the most inexperienced eye. (I'm not referring to you, with this, by the way, but rather a general comment).
Get tired of being wrong, Mick?

Your opinion is one of the most respected in this sub forum. This forum has changed dramatically in the last few months, but give it a chance. Forums are cyclical - watch out for the swinging pendulum.
Hey sadiejane, how are you? Respectfully, it's not what brought me here. The W&SS did. My love of steel was secondary.
Doc
ETA: the forked bracts below the flowerhead of Queen Anne's Lace is also an identifying feature.